Road machine



J. B. JARMIN ROAD MACHINE ,Filed April 1o. 1922 2 Sheets-Sheet 1 J. E. Mmm

Jamo s 1924.,

ROAD MACHNE vjustment in a vertical plane.

Patented Jan. 22, 1924. n

PATENT OFFICE.

JAMES 1B. JAR/MIN, OF SPOKANE-WASHING'TON.

ROAD` MACHINE.

Application filed April 10, 1922. Serial No. 551,316.

To all whom it may concern:

Be it known that I, JAMES B. JARMIN, a citizen of the United States, residing at Spokane, Spokane County, and State of Washington, have invented certain new and useful Improvements in Road Machines, of which the following is a specification.

My present invention relates to imp-rovements in road machines of the wheeled Vscraper type, for leveling, grading, and resurfacing macadam, gravel and similar roads to insure a smooth, hard and rounded surface for the road. The primary object of the invention is to improve the construction of machine or implements'of this character in severa-l ways in order that the implement itself may be bodily moved for ad- To provide means whereby the body or main frame of the implement or 'vehicle' may be tilted in order to adjust the scrapers or blades to the. lateral slope of the road surface. Also to rovide means whereby the Scrapers may Ee turned, with facility, to the required oblique position for distributing material laterally as for instance in cutting down ridges and filling up ruts. The improved means for accomplishing these and other purposes are embodied in a wheeled implement having a comparatively long wheel l base and of Isufficient weight and rigidity asto hold the scraper blades to their work on the road surface. The invention thus consists in certain novel combinations and arrangements ofl parts as Will hereinafter be more specifically set forth and claimed.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention whereinl the parts are combined and arranged ac-` cording to the best mode I have thus far devised for the practical application of the principles of my invention. Figure 1 is a top plan Viewl of a wheeled scraper constructed accordingto my invention.

Figure 2 is a viewpin side elevation of the implement.

' Figure '3 is a rear end elevation of the machine., I i

Figure 4 is a detail perspective view showing the bolt connection for holding the rotary, iadjustable ring in fixed position.

Figure 5 is a sectional view showing the parts of Figure 4.

showin -one of the rear pivot-al joints between t ie rear transverse beam and one of the side beams of the 4scraper frame.

'In the preferred form of the invention -the rigid main frame is made up gf angle irons or channel irons. and includes a pair of parallel, longitudinally extending, spaced angle bars 1, l, forming side members of the frame, which converge toward the front of the implement as at 2, 2, and the rear ends of these side bars are rigidly joined by a cross bar 3, the parts being bolted or riveted together to form a durable and rigid ,sup-

portin frame for the implement.

At t e front of the machine the converging side arms are supported by a pair of wheels or steering truck including the wheels 4 and draft tongue 5, and a head 6 rigid'with the truck and tongue forms one member of the swivel joint' between the main frame and its steering truck. By means of a screw bar 7 and crank 8, the main frame may be vertically adjusted on the king pin 9 which is supported in the head (3 on the steering-truck. By turning the screw bar 7 its threaded connection with afnut portion 10 of the main frame, will result. in elevating or lowering the front of the machine to adjust the main frame relative to the road surface. y

` The supporting, rear wheels 11 and 12 are preferably located 'at the outer sides and. to the rear of the'corners of the main frame,

and these wheels each has an independent as 18 may be applied to each of the arms, 110

16 to assist in elevating the frame and in holding the parts in adjusted position. Thus vthe main frame, which issupported at its front on a central support, is vertically adjustable at the front. The rear end of the frame is bodily adjustable to 'co-.operate with the adjustment at the front, and either rear corner of the main frame is adjustable independent of the other. This latter adjustment permits tilting o f the implement frame laterally to adapt the machine to either a right hand or a left hand slope of the road surface.

Between the comparatively long wheel base, as indicated in Figure 2, are located two scraper blades as 19 and 20, which are disposed normally transverse of the machine and preferably composed of concavoconvex plates standing on edge,and projecting laterallysome distance beyond the sides of the main frame. Scrapers are tiltable with the main frame as described, and, while maintained in parallelism may be turned at an angle to the direction of travel of the implement, within A. the limits of the dotted lines and arcs in Figure l. Each scraper blade is strengthened a reinforcing angle iron bar 21 bolted at the rear and extending longitudinally thereof, and these bars form the means of attachment to the two parallel beams 22, 22 o f the scraper frame. v These side bars of the scraper frame extend longitudinally of the machine and below the main frame, crossing the two scraper blades At the outer sides above their top edges. of the side bars 22 are attached, as by rivets, two pairs of plates 23, each plate being fashioned with a stud-end or pin 23 that passes through a socket formed by the perforated head`24 and a strap 25, the latter secured to the angle braces 21 as by bolts and nuts 26. Thus, at four points the two scraper blades and the two side bars 22 have pivotal connections. To hold the scraper blades from turning over as they travel over the road surface four notched latches or plates 27 are pivoted as at 28 to the four attaching plates 23. The connection of these notched plates over the topl edges of the scraper blades is such as to permit the required rotary movement ofthe blades, but at the same time they hold the blades against turning down toward the road surface.

Near the front ends of the side bars 22 of -the scraper frame they are suspended by two These plates or ring 30, as at 30 and the posts thus swing with the ring as it is turned in its bearing clips 32 attached to the main frame as a support for the ring. Diagonal braces 33 extend upward and rearwardly from the lower ends of the posts 29 to the ring 30 for reinforcing and bracing the parts.

At their rear ends the side bars of the scraper frame are pivoted to a bolster 34, by 4bolts 85, as best seen in Figure 9. The bolster is disposed transversely of the imlement, below the rear bar of the main rame and is suspended therefrom by a V- shape yoke 86 having its flanged ends bolted at the underside of the rear bar.

The bolster, at its longitudinal center, is provided with a bearing plate 37 which is adapted to turn about a pin 36 at the lower end ofthe yoke, to form a swivel head. Thus it will be apparent that the scraper .frame is flexible and is supported or suspended from the main frame at oneiixed point only i. e. the swivel bearing at the rear for the bolster, the other points of suspension, as the two posts 29 being movable with the supporting ring 30. lBy this arrangement of parts the scraper frame and its scraper blades may be swung to 'the right or left of the machine on the swivel bearing of the bolster 34.

The supporting ring 30 is held in adjusted position against rota-ry movement by means carried by one of the cross bars or channel irons 38 of the main frame located just at the rear of the rin'g. Upon this cross bar is bolted or riveted a U-shape yoke 39 in which is slidably supported a locking bolt 40 that is adapted to enter one of several holes 4l in the ring 30. The bolt is urged to locking position by a coiled spring 42 withinthe yoke, and may be withdrawn from locking position by means of a foot lever 43 having one end pivoted to a part of the main frame at 44, and also pivotally connected at 45 to the locking bolt. Thus the driver may occupy the seat 46 with the foot lever in convenient position for actuation, and with the i two levers 14 and l5 readily accessible for use.

In the position of Figures 1, 2, and 3, the parts are normal with the scraper blades at right angles to 'the longitudinal axis of the implement, and horizontally disposed or level with the flat roadway. To swing the scraper bladesL as indicated in dotted lines Figure 1', and assuming that the vehicle is traveling forward, the driver may swing lever 14 for instance to elevate the rear, left hand end of the main frame. causes the weight of the implement to be shifted toward the right ends of the two Scrapers by' elevating their left ends. By turning the foot lever to dotted osition of Figure 5 the' ring 30 is release and the drag of the two right ends of the Scrapers This action on the ground retards their forward movement. This retarding movement causes the rear bolster to swivel or swing on its pin, the left end of the bolster swinging toward the front and the right end toward the rear, the flexible frame is flexed at its two rear corners and at its pivotal connections with posts 29, 29 and the reverse movement of the two side bars 22 causes the ring to swing clockwise.

'hen the desired position of the ring has been reached, the foot lever 43 is released and lock bolt 40 is permited to enter a coniplementary hole 41 to lock the ring'.

Due to the four pivotal connections between the scraper blades and their frame bars 22, during the flexure of the scrapperframe. the blades are maintained in parallelism and are swung to the desired angle over the surface of the roadway. The blades are thus diagonally disposed or at an angle to the transverse axis of the implement. and are vertically tilted complementary to the slope of the roadway from its crown or center. Different adjustments may be accomplished in similar manner by utilizing the operating lever 15, to accommodate the implement for various conditions of the roadway. After the parts have been adjusted a rigid relation is maintained between the main frame and the scraper frame, and the required rigidity for the scraper blades with relation to the scraper frame is also secured, thus providing a strong, durable and effective means for the purposes required.

Having thus fully7 described my invention` what I claim and desire to secure by Letters Patent isl. rIhe combination in a wheeled scraper with a vertically adjustable main frame, of a flexible scraper frame having a swiveled connection on and suspended from the main frame, a scraper having pivotal connection with the scraper frame, and means whereby said scraper frame may be turned in a horizontal plane on a point at the longitudinal center of the main trame.

2. The combination in an implement as described with its main frame. of a rotary ring supported therein, a flexible scraper frame havingr a swivel connection with said main frame, and pivotal suspending members between said ring: and flexible frame.

3. The combination with a main frame, of a rotary ring supported therein and means for coupling?,` said ring and frame, a flexible scraper fratrie swiveled to said main frame, posts on said ring having pivotal connection with said flexible frame, and a scraper bar carried by said scraper frame.

4. The combination with a main frame of a rotary ring supported therein and means for retaining said ring, a flexible scraper frame, a central yoke at the rear of the main frame and a swivel connection between said yoke and scraper frame. posts on said ring having pivotal connection with said flexible frame, and a pair of spaced, parallel scrapers pivoted in said flexible frame.

5. The combination with a main frame and a rotary supporting ring, of a flexible scraper frame comprising a rear bolster swiveled to the main frame. longitudinally extending side bars pivoted at the ends of said bolster, posts fixed to said ring and pivotally connected to said bars. and a pair of scraper bars pivoted to said side bars.

6. The combination with a main frame having suporting wheels and means for tilting said frame with relation to its wheels, of a flexible scraper frame having a swiveled connection with the main frame, a rotary supporting member in thc main frame. posts fixed to said member having pivotal connections in the flexible frame, and a scraper bar pivotally connecting said scraper frame.

7. In a wheeled scraper the combination with a tiltable main frame, of a rotary suspendingr ring supported therein. a rear`bolster having a swivel connection with the main frame, pivoted side bars at thc ends of said bolster, posts fixed to said ring: having pivotal connection with said bars, and a pair of scrapers pivoted to said side bars.

8. The combination with a main frame of a pair of supporting wheels, a crank axle for each said wheel journaled to the main frame, means for independently turning said axles to adjust the frame, a horizontally disposed flexible scraper frame having a vertically disposed swivel support from said main frame. and a pair of scraper bars having a vertically disposed'pivotal conneclion with said flexible frame.

9. The combination with a main frame anda horizontally disposed flexible parallel frame having* a swivel connection therewith, of a suspending ring supported in said main frame and having pivotal connection with said flexibe frame, a springr pressed bolt for engaging selected holes in said ring, and means for releasingr said bolt.

' In testimony whereof I aflix my signature. l

JAMES B. J ARMIN. 

